1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
22 Java and all Java-based marks are trademarks or registered trademarks
23 of Sun Microsystems, Inc. in the United States and other countries.
24 The Free Software Foundation is independent of Sun Microsystems, Inc. */
26 /* Written by Per Bothner <bothner@cygnus.com> */
30 #include "coretypes.h"
36 #include "java-except.h"
38 #include "java-tree.h"
51 #ifdef HAVE_LANGINFO_CODESET
55 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
56 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
57 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
58 #define JPOOL_UTF_DATA(JCF, INDEX) \
59 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
60 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
62 unsigned char save; unsigned char *text; \
63 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
64 text = (JCF)->read_ptr; \
65 save = text[LENGTH]; \
67 (JCF)->cpool.data[INDEX].t = get_identifier (text); \
68 text[LENGTH] = save; \
69 JCF_SKIP (JCF, LENGTH); } while (0)
73 extern struct obstack temporary_obstack
;
75 /* Set to nonzero value in order to emit class initialization code
76 before static field references. */
77 extern int always_initialize_class_p
;
79 static GTY(()) tree parse_roots
[3];
81 /* The FIELD_DECL for the current field. */
82 #define current_field parse_roots[0]
84 /* The METHOD_DECL for the current method. */
85 #define current_method parse_roots[1]
87 /* A list of file names. */
88 #define current_file_list parse_roots[2]
90 /* The Java archive that provides main_class; the main input file. */
91 static GTY(()) struct JCF
* main_jcf
;
93 static struct ZipFile
*localToFile
;
95 /* Declarations of some functions used here. */
96 static void handle_innerclass_attribute (int count
, JCF
*);
97 static tree
give_name_to_class (JCF
*jcf
, int index
);
98 static char *compute_class_name (struct ZipDirectory
*zdir
);
99 static int classify_zip_file (struct ZipDirectory
*zdir
);
100 static void parse_zip_file_entries (void);
101 static void process_zip_dir (FILE *);
102 static void parse_source_file_1 (tree
, FILE *);
103 static void parse_source_file_2 (void);
104 static void parse_source_file_3 (void);
105 static void parse_class_file (void);
106 static void handle_deprecated (void);
107 static void set_source_filename (JCF
*, int);
108 static void jcf_parse (struct JCF
*);
109 static void load_inner_classes (tree
);
111 /* Handle "Deprecated" attribute. */
113 handle_deprecated (void)
115 if (current_field
!= NULL_TREE
)
116 FIELD_DEPRECATED (current_field
) = 1;
117 else if (current_method
!= NULL_TREE
)
118 METHOD_DEPRECATED (current_method
) = 1;
119 else if (current_class
!= NULL_TREE
)
120 CLASS_DEPRECATED (TYPE_NAME (current_class
)) = 1;
123 /* Shouldn't happen. */
128 /* Handle "SourceFile" attribute. */
131 set_source_filename (JCF
*jcf
, int index
)
133 tree sfname_id
= get_name_constant (jcf
, index
);
134 const char *sfname
= IDENTIFIER_POINTER (sfname_id
);
135 if (input_filename
!= NULL
)
137 int old_len
= strlen (input_filename
);
138 int new_len
= IDENTIFIER_LENGTH (sfname_id
);
139 /* Use the current input_filename (derived from the class name)
140 if it has a directory prefix, but otherwise matches sfname. */
141 if (old_len
> new_len
142 && strcmp (sfname
, input_filename
+ old_len
- new_len
) == 0
143 && (input_filename
[old_len
- new_len
- 1] == '/'
144 || input_filename
[old_len
- new_len
- 1] == '\\'))
147 input_filename
= sfname
;
148 DECL_SOURCE_FILE (TYPE_NAME (current_class
)) = sfname
;
149 if (current_class
== main_class
) main_input_filename
= input_filename
;
152 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
154 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
155 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
156 current_class = give_name_to_class (jcf, THIS); \
157 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
159 #define HANDLE_CLASS_INTERFACE(INDEX) \
160 add_interface (current_class, get_class_constant (jcf, INDEX))
162 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
163 { int sig_index = SIGNATURE; \
164 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
165 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
166 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
167 if ((ACCESS_FLAGS) & ACC_FINAL) \
168 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
171 #define HANDLE_END_FIELDS() \
172 (current_field = NULL_TREE)
174 #define HANDLE_CONSTANTVALUE(INDEX) \
175 { tree constant; int index = INDEX; \
176 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
177 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
178 constant = build_utf8_ref (name); \
181 constant = get_constant (jcf, index); \
182 set_constant_value (current_field, constant); }
184 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
185 (current_method = add_method (current_class, ACCESS_FLAGS, \
186 get_name_constant (jcf, NAME), \
187 get_name_constant (jcf, SIGNATURE)), \
188 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
189 DECL_LINENUMBERS_OFFSET (current_method) = 0)
191 #define HANDLE_END_METHODS() \
192 { current_method = NULL_TREE; }
194 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
195 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
196 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
197 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
198 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
200 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
202 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
203 JCF_SKIP (jcf, n * 10); }
205 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
207 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
208 JCF_SKIP (jcf, n * 4); }
210 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
213 tree list = DECL_FUNCTION_THROWS (current_method); \
216 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
217 list = tree_cons (NULL_TREE, thrown_class, list); \
219 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
222 #define HANDLE_DEPRECATED_ATTRIBUTE() handle_deprecated ()
224 /* Link seen inner classes to their outer context and register the
225 inner class to its outer context. They will be later loaded. */
226 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
227 handle_innerclass_attribute (COUNT, jcf)
229 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
231 /* Irrelevant decls should have been nullified by the END macros. \
232 We only handle the `Synthetic' attribute on method DECLs. \
233 DECL_ARTIFICIAL on fields is used for something else (See \
234 PUSH_FIELD in java-tree.h) */ \
235 if (current_method) \
236 DECL_ARTIFICIAL (current_method) = 1; \
239 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
241 if (current_class == object_type_node) \
242 jcf->right_zip = 1; \
245 #include "jcf-reader.c"
248 parse_signature (JCF
*jcf
, int sig_index
)
250 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
251 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
254 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
255 JPOOL_UTF_LENGTH (jcf
, sig_index
));
259 get_constant (JCF
*jcf
, int index
)
263 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
265 tag
= JPOOL_TAG (jcf
, index
);
266 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
267 return jcf
->cpool
.data
[index
].t
;
270 case CONSTANT_Integer
:
272 jint num
= JPOOL_INT(jcf
, index
);
273 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
274 TREE_TYPE (value
) = int_type_node
;
279 unsigned HOST_WIDE_INT num
= JPOOL_UINT (jcf
, index
);
280 HOST_WIDE_INT lo
, hi
;
281 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
282 num
= JPOOL_UINT (jcf
, index
+1);
283 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
284 value
= build_int_2 (lo
, hi
);
285 TREE_TYPE (value
) = long_type_node
;
286 force_fit_type (value
, 0);
292 jint num
= JPOOL_INT(jcf
, index
);
296 real_from_target_fmt (&d
, &buf
, &ieee_single_format
);
297 value
= build_real (float_type_node
, d
);
301 case CONSTANT_Double
:
306 hi
= JPOOL_UINT (jcf
, index
);
307 lo
= JPOOL_UINT (jcf
, index
+1);
309 if (FLOAT_WORDS_BIG_ENDIAN
)
310 buf
[0] = hi
, buf
[1] = lo
;
312 buf
[0] = lo
, buf
[1] = hi
;
314 real_from_target_fmt (&d
, buf
, &ieee_double_format
);
315 value
= build_real (double_type_node
, d
);
319 case CONSTANT_String
:
321 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
322 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
323 int utf8_len
= IDENTIFIER_LENGTH (name
);
324 const unsigned char *utf8
;
327 /* Check for a malformed Utf8 string. */
328 utf8
= (const unsigned char *) utf8_ptr
;
332 int char_len
= UT8_CHAR_LENGTH (*utf8
);
333 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
334 fatal_error ("bad string constant");
340 /* Allocate a new string value. */
341 value
= build_string (utf8_len
, utf8_ptr
);
342 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
348 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
349 jcf
->cpool
.data
[index
].t
= value
;
352 internal_error ("bad value constant type %d, index %d",
353 JPOOL_TAG (jcf
, index
), index
);
357 get_name_constant (JCF
*jcf
, int index
)
359 tree name
= get_constant (jcf
, index
);
361 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
367 /* Handle reading innerclass attributes. If a nonzero entry (denoting
368 a non anonymous entry) is found, We augment the inner class list of
369 the outer context with the newly resolved innerclass. */
372 handle_innerclass_attribute (int count
, JCF
*jcf
)
377 /* Read inner_class_info_index. This may be 0 */
378 int icii
= JCF_readu2 (jcf
);
379 /* Read outer_class_info_index. If the innerclasses attribute
380 entry isn't a member (like an inner class) the value is 0. */
381 int ocii
= JCF_readu2 (jcf
);
382 /* Read inner_name_index. If the class we're dealing with is
383 an anonymous class, it must be 0. */
384 int ini
= JCF_readu2 (jcf
);
385 /* Read the access flag. */
386 int acc
= JCF_readu2 (jcf
);
387 /* If icii is 0, don't try to read the class. */
390 tree
class = get_class_constant (jcf
, icii
);
391 tree decl
= TYPE_NAME (class);
392 /* Skip reading further if ocii is null */
393 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
395 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
396 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
397 set_class_decl_access_flags (acc
, decl
);
398 DECL_CONTEXT (decl
) = outer
;
399 DECL_INNER_CLASS_LIST (outer
) =
400 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
401 CLASS_COMPLETE_P (decl
) = 1;
408 give_name_to_class (JCF
*jcf
, int i
)
410 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
411 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
416 int j
= JPOOL_USHORT1 (jcf
, i
);
417 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
418 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
419 JPOOL_UTF_LENGTH (jcf
, j
));
420 this_class
= lookup_class (class_name
);
421 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
423 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
424 main_input_filename
= input_filename
;
426 jcf
->cpool
.data
[i
].t
= this_class
;
427 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
432 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
435 get_class_constant (JCF
*jcf
, int i
)
438 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
439 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
442 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
444 int name_index
= JPOOL_USHORT1 (jcf
, i
);
445 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
446 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
447 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
449 if (name
[0] == '[') /* Handle array "classes". */
450 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
453 tree cname
= unmangle_classname (name
, nlength
);
454 type
= lookup_class (cname
);
456 jcf
->cpool
.data
[i
].t
= type
;
457 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
460 type
= jcf
->cpool
.data
[i
].t
;
464 /* Read a class with the fully qualified-name NAME.
465 Return 1 iff we read the requested file.
466 (It is still possible we failed if the file did not
467 define the class it is supposed to.) */
470 read_class (tree name
)
473 tree icv
, class = NULL_TREE
;
474 tree save_current_class
= current_class
;
475 location_t save_location
= input_location
;
476 JCF
*save_current_jcf
= current_jcf
;
478 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
480 class = TREE_TYPE (icv
);
481 jcf
= TYPE_JCF (class);
488 this_jcf
.zipd
= NULL
;
490 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
497 if (current_jcf
->java_source
)
499 const char *filename
= current_jcf
->filename
;
504 java_parser_context_save_global ();
505 java_push_parser_context ();
506 BUILD_FILENAME_IDENTIFIER_NODE (file
, filename
);
507 generate
= IS_A_COMMAND_LINE_FILENAME_P (file
);
508 if (wfl_operator
== NULL_TREE
)
509 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
510 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
511 input_filename
= ggc_strdup (filename
);
512 current_class
= NULL_TREE
;
513 current_function_decl
= NULL_TREE
;
514 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
516 if (!(finput
= fopen (input_filename
, "r")))
517 fatal_error ("can't reopen %s: %m", input_filename
);
518 parse_source_file_1 (file
, finput
);
519 parse_source_file_2 ();
520 parse_source_file_3 ();
522 fatal_error ("can't close %s: %m", input_filename
);
524 JCF_FINISH (current_jcf
);
525 java_pop_parser_context (generate
);
526 java_parser_context_restore_global ();
530 if (class == NULL_TREE
|| ! CLASS_PARSED_P (class))
532 java_parser_context_save_global ();
533 java_push_parser_context ();
534 current_class
= class;
535 input_filename
= current_jcf
->filename
;
536 if (JCF_SEEN_IN_ZIP (current_jcf
))
537 read_zip_member(current_jcf
,
538 current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
539 jcf_parse (current_jcf
);
540 /* Parsing might change the class, in which case we have to
541 put it back where we found it. */
542 if (current_class
!= class && icv
!= NULL_TREE
)
543 TREE_TYPE (icv
) = current_class
;
544 class = current_class
;
545 java_pop_parser_context (0);
546 java_parser_context_restore_global ();
548 layout_class (class);
549 load_inner_classes (class);
552 current_class
= save_current_class
;
553 input_location
= save_location
;
554 current_jcf
= save_current_jcf
;
558 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
559 called from the parser, otherwise it's a RECORD_TYPE node. If
560 VERBOSE is 1, print error message on failure to load a class. */
562 /* Replace calls to load_class by having callers call read_class directly
563 - and then perhaps rename read_class to load_class. FIXME */
566 load_class (tree class_or_name
, int verbose
)
571 /* class_or_name can be the name of the class we want to load */
572 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
573 name
= class_or_name
;
574 /* In some cases, it's a dependency that we process earlier that
576 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
577 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
578 /* Or it's a type in the making */
580 name
= DECL_NAME (TYPE_NAME (class_or_name
));
587 if ((class_loaded
= read_class (name
)))
590 /* We failed loading name. Now consider that we might be looking
591 for a inner class. */
592 if ((separator
= strrchr (IDENTIFIER_POINTER (name
), '$'))
593 || (separator
= strrchr (IDENTIFIER_POINTER (name
), '.')))
597 name
= get_identifier (IDENTIFIER_POINTER (name
));
600 /* Otherwise, we failed, we bail. */
605 if (!class_loaded
&& verbose
)
606 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved
));
609 /* Parse the .class file JCF. */
616 if (jcf_parse_preamble (jcf
) != 0)
617 fatal_error ("not a valid Java .class file");
618 code
= jcf_parse_constant_pool (jcf
);
620 fatal_error ("error while parsing constant pool");
621 code
= verify_constant_pool (jcf
);
623 fatal_error ("error in constant pool entry #%d\n", code
);
625 jcf_parse_class (jcf
);
626 if (main_class
== NULL_TREE
)
627 main_class
= current_class
;
628 if (! quiet_flag
&& TYPE_NAME (current_class
))
629 fprintf (stderr
, " %s %s",
630 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
631 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
632 if (CLASS_PARSED_P (current_class
))
634 /* FIXME - where was first time */
635 fatal_error ("reading class %s for the second time from %s",
636 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))),
639 CLASS_PARSED_P (current_class
) = 1;
641 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
643 switch (JPOOL_TAG (jcf
, i
))
646 get_class_constant (jcf
, i
);
651 code
= jcf_parse_fields (jcf
);
653 fatal_error ("error while parsing fields");
654 code
= jcf_parse_methods (jcf
);
656 fatal_error ("error while parsing methods");
657 code
= jcf_parse_final_attributes (jcf
);
659 fatal_error ("error while parsing final attributes");
661 /* The fields of class_type_node are already in correct order. */
662 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
663 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
665 if (current_class
== object_type_node
)
667 layout_class_methods (object_type_node
);
668 /* If we don't have the right archive, emit a verbose warning.
669 If we're generating bytecode, emit the warning only if
670 -fforce-classes-archive-check was specified. */
672 && (!flag_emit_class_files
|| flag_force_classes_archive_check
))
673 fatal_error ("the `java.lang.Object' that was found in `%s' didn't have the special zero-length `gnu.gcj.gcj-compiled' attribute. This generally means that your classpath is incorrectly set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath", jcf
->filename
);
676 all_class_list
= tree_cons (NULL_TREE
,
677 TYPE_NAME (current_class
), all_class_list
);
680 /* If we came across inner classes, load them now. */
682 load_inner_classes (tree cur_class
)
685 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class
)); current
;
686 current
= TREE_CHAIN (current
))
688 tree name
= DECL_NAME (TREE_PURPOSE (current
));
689 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
690 if (decl
&& ! CLASS_LOADED_P (TREE_TYPE (decl
))
691 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
692 load_class (name
, 1);
697 init_outgoing_cpool (void)
699 outgoing_cpool
= ggc_alloc_cleared (sizeof (struct CPool
));
703 parse_class_file (void)
706 location_t save_location
= input_location
;
708 java_layout_seen_class_methods ();
710 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
712 (*debug_hooks
->start_source_file
) (input_line
, input_filename
);
713 init_outgoing_cpool ();
715 /* Currently we always have to emit calls to _Jv_InitClass when
716 compiling from class files. */
717 always_initialize_class_p
= 1;
719 java_mark_class_local (current_class
);
721 for (method
= TYPE_METHODS (current_class
);
722 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
724 JCF
*jcf
= current_jcf
;
726 if (METHOD_ABSTRACT (method
))
729 if (METHOD_NATIVE (method
))
736 /* We need to compute the DECL_MAX_LOCALS. We need to take
737 the wide types into account too. */
738 for (arg
= TYPE_ARG_TYPES (TREE_TYPE (method
)), decl_max_locals
= 0;
739 arg
!= end_params_node
;
740 arg
= TREE_CHAIN (arg
), decl_max_locals
+= 1)
742 if (TREE_VALUE (arg
) && TYPE_IS_WIDE (TREE_VALUE (arg
)))
743 decl_max_locals
+= 1;
745 DECL_MAX_LOCALS (method
) = decl_max_locals
;
746 start_java_method (method
);
747 give_name_to_locals (jcf
);
748 expand_expr_stmt (build_jni_stub (method
));
753 if (DECL_CODE_OFFSET (method
) == 0)
755 current_function_decl
= method
;
756 error ("missing Code attribute");
761 if (DECL_LINENUMBERS_OFFSET (method
))
764 register unsigned char *ptr
;
765 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
766 linenumber_count
= i
= JCF_readu2 (jcf
);
767 linenumber_table
= ptr
= jcf
->read_ptr
;
769 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
771 int line
= GET_u2 (ptr
);
772 /* Set initial lineno lineno to smallest linenumber.
773 * Needs to be set before init_function_start. */
774 if (input_line
== 0 || line
< input_line
)
780 linenumber_table
= NULL
;
781 linenumber_count
= 0;
784 start_java_method (method
);
786 note_instructions (jcf
, method
);
788 give_name_to_locals (jcf
);
790 /* Actually generate code. */
791 expand_byte_code (jcf
, method
);
796 if (flag_emit_class_files
)
797 write_classfile (current_class
);
801 (*debug_hooks
->end_source_file
) (save_location
.line
);
802 input_location
= save_location
;
805 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
808 parse_source_file_1 (tree file
, FILE *finput
)
810 int save_error_count
= java_error_count
;
811 /* Mark the file as parsed */
812 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
814 jcf_dependency_add_file (input_filename
, 0);
816 lang_init_source (1); /* Error msgs have no method prototypes */
818 /* There's no point in trying to find the current encoding unless we
819 are going to do something intelligent with it -- hence the test
821 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
822 setlocale (LC_CTYPE
, "");
823 if (current_encoding
== NULL
)
824 current_encoding
= nl_langinfo (CODESET
);
826 if (current_encoding
== NULL
|| *current_encoding
== '\0')
827 current_encoding
= DEFAULT_ENCODING
;
829 /* Initialize the parser */
830 java_init_lex (finput
, current_encoding
);
831 java_parse_abort_on_error ();
833 java_parse (); /* Parse and build partial tree nodes. */
834 java_parse_abort_on_error ();
837 /* Process a parsed source file, resolving names etc. */
840 parse_source_file_2 (void)
842 int save_error_count
= java_error_count
;
843 java_complete_class (); /* Parse unsatisfied class decl. */
844 java_parse_abort_on_error ();
848 parse_source_file_3 (void)
850 int save_error_count
= java_error_count
;
851 java_check_circular_reference (); /* Check on circular references */
852 java_parse_abort_on_error ();
853 java_fix_constructors (); /* Fix the constructors */
854 java_parse_abort_on_error ();
855 java_reorder_fields (); /* Reorder the fields */
859 add_predefined_file (tree name
)
861 predef_filenames
= tree_cons (NULL_TREE
, name
, predef_filenames
);
865 predefined_filename_p (tree node
)
869 for (iter
= predef_filenames
; iter
!= NULL_TREE
; iter
= TREE_CHAIN (iter
))
871 if (TREE_VALUE (iter
) == node
)
878 java_parse_file (int set_yydebug ATTRIBUTE_UNUSED
)
880 int filename_count
= 0;
885 if (flag_filelist_file
)
888 finput
= fopen (input_filename
, "r");
890 fatal_error ("can't open %s: %m", input_filename
);
891 list
= xmalloc(avail
);
899 avail
= 2 * (count
+ avail
);
900 list
= xrealloc (list
, avail
);
902 avail
= avail
- count
;
904 /* Subtract to to guarantee space for final '\0'. */
905 count
= fread (next
, 1, avail
- 1, finput
);
909 fatal_error ("error closing %s: %m", input_filename
);
920 list
= xstrdup (input_filename
);
924 for (next
= list
; ; )
927 if (ch
== '\n' || ch
== '\r' || ch
== '\t' || ch
== ' '
928 || ch
== '&' /* FIXME */)
956 int len
= strlen (list
);
958 obstack_grow0 (&temporary_obstack
, list
, len
);
959 value
= obstack_finish (&temporary_obstack
);
963 /* Exclude file that we see twice on the command line. For
964 all files except {Class,Error,Object,RuntimeException,String,
965 Throwable}.java we can rely on maybe_get_identifier. For
966 these files, we need to do a linear search of
967 current_file_list. This search happens only for these
968 files, presumably only when we're recompiling libgcj. */
970 if ((id
= maybe_get_identifier (value
)))
972 if (predefined_filename_p (id
))
975 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
976 if (TREE_VALUE (c
) == id
)
986 warn_loc
.file
= value
;
988 warning ("%Hsource file seen twice on command line and "
989 "will be compiled only once", &warn_loc
);
993 BUILD_FILENAME_IDENTIFIER_NODE (node
, value
);
994 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
995 current_file_list
= tree_cons (NULL_TREE
, node
,
1003 if (filename_count
== 0)
1004 warning ("no input file specified");
1008 const char *resource_filename
;
1010 /* Only one resource file may be compiled at a time. */
1011 assert (TREE_CHAIN (current_file_list
) == NULL
);
1013 resource_filename
= IDENTIFIER_POINTER (TREE_VALUE (current_file_list
));
1014 compile_resource_file (resource_name
, resource_filename
);
1019 current_jcf
= main_jcf
;
1020 current_file_list
= nreverse (current_file_list
);
1021 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1023 unsigned char magic_string
[4];
1025 tree name
= TREE_VALUE (node
);
1027 /* Skip already parsed files */
1028 if (HAS_BEEN_ALREADY_PARSED_P (name
))
1031 /* Close previous descriptor, if any */
1032 if (finput
&& fclose (finput
))
1033 fatal_error ("can't close input file %s: %m", main_input_filename
);
1035 finput
= fopen (IDENTIFIER_POINTER (name
), "rb");
1037 fatal_error ("can't open %s: %m", IDENTIFIER_POINTER (name
));
1039 #ifdef IO_BUFFER_SIZE
1040 setvbuf (finput
, xmalloc (IO_BUFFER_SIZE
),
1041 _IOFBF
, IO_BUFFER_SIZE
);
1043 input_filename
= IDENTIFIER_POINTER (name
);
1045 /* Figure what kind of file we're dealing with */
1046 if (fread (magic_string
, 1, 4, finput
) == 4)
1048 fseek (finput
, 0L, SEEK_SET
);
1049 magic
= GET_u4 (magic_string
);
1051 if (magic
== 0xcafebabe)
1053 CLASS_FILE_P (node
) = 1;
1054 current_jcf
= ggc_alloc (sizeof (JCF
));
1055 JCF_ZERO (current_jcf
);
1056 current_jcf
->read_state
= finput
;
1057 current_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1058 jcf_parse (current_jcf
);
1059 TYPE_JCF (current_class
) = current_jcf
;
1060 CLASS_FROM_CURRENTLY_COMPILED_P (current_class
) = 1;
1061 TREE_PURPOSE (node
) = current_class
;
1063 else if (magic
== (JCF_u4
)ZIPMAGIC
)
1065 ZIP_FILE_P (node
) = 1;
1066 main_jcf
= ggc_alloc (sizeof (JCF
));
1067 JCF_ZERO (main_jcf
);
1068 main_jcf
->read_state
= finput
;
1069 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1070 if (open_in_zip (main_jcf
, input_filename
, NULL
, 0) < 0)
1071 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name
));
1072 localToFile
= SeenZipFiles
;
1073 /* Register all the classes defined there. */
1074 process_zip_dir (main_jcf
->read_state
);
1075 parse_zip_file_entries ();
1078 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1083 JAVA_FILE_P (node
) = 1;
1084 java_push_parser_context ();
1085 java_parser_context_save_global ();
1086 parse_source_file_1 (name
, finput
);
1087 java_parser_context_restore_global ();
1088 java_pop_parser_context (1);
1092 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1094 input_filename
= ctxp
->filename
;
1095 parse_source_file_2 ();
1098 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1100 input_filename
= ctxp
->filename
;
1101 parse_source_file_3 ();
1104 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1106 input_filename
= IDENTIFIER_POINTER (TREE_VALUE (node
));
1107 if (CLASS_FILE_P (node
))
1109 current_class
= TREE_PURPOSE (node
);
1110 current_jcf
= TYPE_JCF (current_class
);
1111 layout_class (current_class
);
1112 load_inner_classes (current_class
);
1113 parse_class_file ();
1114 JCF_FINISH (current_jcf
);
1117 input_filename
= main_input_filename
;
1119 java_expand_classes ();
1120 if (!java_report_errors () && !flag_syntax_only
)
1122 /* Optimize and expand all classes compiled from source. */
1123 cgraph_finalize_compilation_unit ();
1125 java_finish_classes ();
1127 /* Emit the .jcf section. */
1128 emit_register_classes ();
1129 if (flag_indirect_dispatch
)
1133 (get_identifier ("otable"),
1134 otable_decl
, otable_methods
, otable_syms_decl
, integer_type_node
);
1137 (get_identifier ("atable"),
1138 atable_decl
, atable_methods
, atable_syms_decl
, ptr_type_node
);
1140 emit_catch_table ();
1143 write_resource_constructor ();
1146 /* Return the name of the class corresponding to the name of the file
1147 in this zip entry. The result is newly allocated using ALLOC. */
1149 compute_class_name (struct ZipDirectory
*zdir
)
1151 char *class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1155 class_name
= ALLOC (zdir
->filename_length
+ 1 - 6);
1156 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
- 6);
1157 class_name
[zdir
->filename_length
- 6] = '\0';
1158 for (j
= 0; class_name
[j
]; ++j
)
1159 class_name
[j
] = class_name
[j
] == '/' ? '.' : class_name
[j
];
1163 /* Return 0 if we should skip this entry, 1 if it is a .class file, 2
1164 if it is a property file of some sort. */
1166 classify_zip_file (struct ZipDirectory
*zdir
)
1168 char *class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1170 if (zdir
->filename_length
> 6
1171 && !strncmp (&class_name_in_zip_dir
[zdir
->filename_length
- 6],
1175 /* For now we drop the manifest and other information. Maybe it
1176 would make more sense to compile it in? */
1177 if (zdir
->filename_length
> 8
1178 && !strncmp (class_name_in_zip_dir
, "META-INF/", 9))
1181 /* Drop directory entries. */
1182 if (zdir
->filename_length
> 0
1183 && class_name_in_zip_dir
[zdir
->filename_length
- 1] == '/')
1189 /* Process all class entries found in the zip file. */
1191 parse_zip_file_entries (void)
1193 struct ZipDirectory
*zdir
;
1196 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1197 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1201 switch (classify_zip_file (zdir
))
1208 char *class_name
= compute_class_name (zdir
);
1209 class = lookup_class (get_identifier (class_name
));
1211 current_jcf
= TYPE_JCF (class);
1212 current_class
= class;
1214 if (! CLASS_LOADED_P (class))
1216 if (! CLASS_PARSED_P (class))
1218 read_zip_member (current_jcf
, zdir
, localToFile
);
1219 jcf_parse (current_jcf
);
1221 layout_class (current_class
);
1222 load_inner_classes (current_class
);
1225 if (TYPE_SIZE (current_class
) != error_mark_node
)
1227 input_filename
= current_jcf
->filename
;
1228 parse_class_file ();
1229 FREE (current_jcf
->buffer
); /* No longer necessary */
1230 /* Note: there is a way to free this buffer right after a
1231 class seen in a zip file has been parsed. The idea is the
1232 set its jcf in such a way that buffer will be reallocated
1233 the time the code for the class will be generated. FIXME. */
1240 char *file_name
, *class_name_in_zip_dir
, *buffer
;
1242 file_name
= ALLOC (zdir
->filename_length
+ 1);
1243 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1244 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1245 file_name
[zdir
->filename_length
] = '\0';
1246 jcf
= ALLOC (sizeof (JCF
));
1248 jcf
->read_state
= finput
;
1249 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1250 jcf
->java_source
= 0;
1251 jcf
->classname
= NULL
;
1252 jcf
->filename
= file_name
;
1255 if (read_zip_member (jcf
, zdir
, localToFile
) < 0)
1256 fatal_error ("error while reading %s from zip file", file_name
);
1258 buffer
= ALLOC (zdir
->filename_length
+ 1 +
1259 (jcf
->buffer_end
- jcf
->buffer
));
1260 strcpy (buffer
, file_name
);
1261 /* This is not a typo: we overwrite the trailing \0 of the
1262 file name; this is just how the data is laid out. */
1263 memcpy (buffer
+ zdir
->filename_length
,
1264 jcf
->buffer
, jcf
->buffer_end
- jcf
->buffer
);
1266 compile_resource_data (file_name
, buffer
,
1267 jcf
->buffer_end
- jcf
->buffer
);
1280 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1281 jcf up for further processing and link it to the created class. */
1284 process_zip_dir (FILE *finput
)
1289 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1290 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1292 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1296 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1298 /* Here we skip non-class files; we handle them later. */
1299 if (classify_zip_file (zdir
) != 1)
1302 class_name
= compute_class_name (zdir
);
1303 file_name
= ALLOC (zdir
->filename_length
+1);
1304 jcf
= ggc_alloc (sizeof (JCF
));
1307 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1308 file_name
[zdir
->filename_length
] = '\0';
1310 class = lookup_class (get_identifier (class_name
));
1312 jcf
->read_state
= finput
;
1313 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1314 jcf
->java_source
= 0;
1315 jcf
->classname
= class_name
;
1316 jcf
->filename
= file_name
;
1319 TYPE_JCF (class) = jcf
;
1323 /* Initialization. */
1326 init_jcf_parse (void)
1331 #include "gt-java-jcf-parse.h"